Kierkegaard Quotation

While translating a Dutch work by Prof. Gerard Visser (Niets Cadeau), I come across a Kierkegaard quote from the diaries, of which I would like to insert a German reference. The quote reads: "Verily, if Christ had known the microscope, he would have immediately begun a brain examination of the apostles."
The annotation I have reads: Kierkegaard, Papirer, Copenhagen 1909-1948, IX A 171.
But apparently Section A, No. 171 in Volume 9 is not the place where this quotation is to be found. Would you be so kind as to give me the Danish wording and the place of its publication. Thank you very much in advance.
Best regards, Karl Heinz Witte